Concrete-filled steel tube column with T-shaped stiffening ribs on inner side of steel tube

Abstract

The invention discloses a concrete-filled steel tube column with T-shaped stiffening ribs on the inner side of a steel tube. The concrete-filled steel tube column with the T-shaped stiffening ribs on the inner side of the steel tube comprises the steel tube and a T-shaped stiffening rib. The steel tube is a square steel tube and filled with concrete, The T-shaped stiffening ribs are embedded in the square steel tube and extend in the height direction of the steel tube. According to the concrete-filled steel tube column with the T-shaped stiffening ribs on the inner side of the steel tube, the longitudinal T-shaped stiffening ribs are arranged on the inner side of the steel tube wall along each side, the concrete-filled square steel tube column with the stiffening ribs is formed, local buckling of the tube wall is delayed, constraint of the tube wall on the concrete is enhanced, the bearing capacity and the deformation performance of a component are improved, and the performance of two materials of steel and the concrete can be brought into play easily.

Description

technical field [0001] The invention relates to a steel tube concrete column with T-shaped stiffening ribs on the inner side of a steel tube, belonging to the technical field of building structures. Background technique [0002] Concrete filled steel pipe is a composite structure formed by pouring concrete into steel pipes and compacting them. As we all know, concrete has high compressive strength, but its bending resistance is weak; steel has strong bending resistance and good elastic-plastic properties, but it is prone to instability and loses its axial compressive capacity when it is under compression. Through the combination of steel pipe and concrete, it not only makes up for the shortcomings of the two materials, but also gives full play to the advantages of the two, making the effect of "1+1>2". [0003] In addition to directly bearing the external load, the steel pipes wrapped in the concrete filled steel tube can also provide lateral restraint for the inner fill...

AI Technical Summary

Problems solved by technology

resulting in slightly poorer member constraints

Especially for square concrete-filled steel tube members with a large width-to-thickness ratio (B / t), the pipe wall is prone to local outward buckling under pressure, which further reduces the bearing capacity of the member.

Therefore, the bearing capacity and ductility of the square concrete-filled steel tube structure are low, and the tube wall is prone to local buckling, so that the strength of steel and concrete cannot be fully utilized.

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